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@@ -97,6 +97,10 @@ typedef uint16_t in_port_t;
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#define MSG_DONTWAIT 0x08 /* Nonblocking i/o for this operation only */
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#define MSG_MORE 0x10 /* Sender will send more */
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+/* Options for level IPPROTO_IP */
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+#define IP_TOS 1
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+#define IP_TTL 2
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+
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/* Options for level IPPROTO_TCP */
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#define TCP_NODELAY 0x01 /* don't delay send to coalesce packets */
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#define TCP_KEEPALIVE 0x02 /* send KEEPALIVE probes when idle for pcb->keep_idle milliseconds */
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@@ -107,6 +111,10 @@ typedef uint16_t in_port_t;
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/* Options and types related to multicast membership */
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#define IP_ADD_MEMBERSHIP 3
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#define IP_DROP_MEMBERSHIP 4
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+/* Options and types for UDP multicast traffic handling */
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+#define IP_MULTICAST_TTL 5
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+#define IP_MULTICAST_IF 6
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+#define IP_MULTICAST_LOOP 7
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typedef struct ip_mreq
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{
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@@ -114,6 +122,27 @@ typedef struct ip_mreq
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struct in_addr imr_interface; /* local IP address of interface */
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} ip_mreq;
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+/* The Type of Service provides an indication of the abstract parameters of the quality of service desired */
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+#define IPTOS_TOS_MASK 0x1E
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+#define IPTOS_TOS(tos) ((tos) & IPTOS_TOS_MASK)
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+#define IPTOS_LOWDELAY 0x10
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+#define IPTOS_THROUGHPUT 0x08
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+#define IPTOS_RELIABILITY 0x04
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+#define IPTOS_LOWCOST 0x02
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+#define IPTOS_MINCOST IPTOS_LOWCOST
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+
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+/* The Network Control precedence designation is intended to be used within a network only */
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+#define IPTOS_PREC_MASK 0xe0
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+#define IPTOS_PREC(tos) ((tos) & IPTOS_PREC_MASK)
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+#define IPTOS_PREC_NETCONTROL 0xe0
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+#define IPTOS_PREC_INTERNETCONTROL 0xc0
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+#define IPTOS_PREC_CRITIC_ECP 0xa0
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+#define IPTOS_PREC_FLASHOVERRIDE 0x80
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+#define IPTOS_PREC_FLASH 0x60
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+#define IPTOS_PREC_IMMEDIATE 0x40
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+#define IPTOS_PREC_PRIORITY 0x20
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+#define IPTOS_PREC_ROUTINE 0x00
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+
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/* Options for shatdown type */
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#ifndef SHUT_RD
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#define SHUT_RD 0
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chenyong